It is hard to say about problems. I think that administration of the project simply cannot find the best time for listing of tokens and can not announce about listing.
No need to look for a best time for listing. Need to do a project. If the project is in demand, the listing will be successful at any time.
I agree that no need to look for the best time, because nobody knows when it will be a good time, but before listing it must be a ready ecosystem of the project, otherwise the price of the tokens will fall.